/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package cn.zch.test.netty.udt.echo.bytes;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.udt.UdtChannel;
import io.netty.channel.udt.nio.NioUdtProvider;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;
import io.netty.util.concurrent.DefaultThreadFactory;

import java.util.concurrent.ThreadFactory;
/**
 * UDT Byte Stream Server
 * <p>
 * Echoes back any received data from a client.
 */
public final class ByteEchoServer {
  static final int PORT = Integer.parseInt(System.getProperty("port", "8007"));
  public static void main(String[] args) throws Exception {
    final ThreadFactory acceptFactory = new DefaultThreadFactory("accept");
    final ThreadFactory connectFactory = new DefaultThreadFactory("connect");
    final NioEventLoopGroup acceptGroup = new NioEventLoopGroup(1, acceptFactory, NioUdtProvider.BYTE_PROVIDER);
    final NioEventLoopGroup connectGroup = new NioEventLoopGroup(1, connectFactory, NioUdtProvider.BYTE_PROVIDER);
    // Configure the server.
    try {
      final ServerBootstrap boot = new ServerBootstrap();
      boot.group(acceptGroup, connectGroup).channelFactory(NioUdtProvider.BYTE_ACCEPTOR).option(ChannelOption.SO_BACKLOG, 10).handler(new LoggingHandler(LogLevel.INFO)).childHandler(new ChannelInitializer<UdtChannel>() {
        @Override
        public void initChannel(final UdtChannel ch) throws Exception {
          ch.pipeline().addLast(new LoggingHandler(LogLevel.INFO), new ByteEchoServerHandler());
        }
      });
      // Start the server.
      final ChannelFuture future = boot.bind(PORT).sync();
      // Wait until the server socket is closed.
      future.channel().closeFuture().sync();
    }
    finally {
      // Shut down all event loops to terminate all threads.
      acceptGroup.shutdownGracefully();
      connectGroup.shutdownGracefully();
    }
  }
}
